orificeplate
nounUK /ˈɒrɪfɪs pleɪt/
US /ˈɔːrəfɪs pleɪt/
A flat metal plate with a hole in it that helps measure how fast liquid or gas flows through a pipe.
The engineer installed an orifice plate in the pipe to measure the water flow.
RELATED WORDS
OTHER MEANINGS
2. A plate with a small opening used to control or limit the flow of a fluid.
The orifice plate narrowed the flow so the pressure could be checked.
3. A component in some spray nozzles that shapes the spray pattern.
Replacing the orifice plate changed the spray from a wide fan to a narrow stream.
4. A plate with a calibrated hole used in testing to simulate a known resistance.
The lab used an orifice plate to create a repeatable pressure drop in the test rig.